From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Wed, 13 Dec 2017 08:44:19 +0000 (+0100)
Subject: rc plane ski - new flat version
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=f64f650163cb2c07b23ff7d61f0cda691c22f014;p=things.git

rc plane ski - new flat version
---

diff --git a/rc-plane-ski.scad b/rc-plane-ski.scad
index 61d9b8f..13dfffd 100644
--- a/rc-plane-ski.scad
+++ b/rc-plane-ski.scad
@@ -8,77 +8,63 @@ center_w = 5;
 center_l = base_l - base_w;
 center_h = 1.5;
 
-tip_r = 25;
-tip_rv = 25;
-tip_rv_off = base_l/2-2;
-wall = 1.2;
+tip_l = 30;
+wall = 0.8;
+
+axle_pos = 0.55;
+axle_x = base_l/2 - axle_pos*base_l;
 
 axle_hole = 1.2 + 0.5;
 axle_slot = 1.2;
-axle_top_l = 15;
-axle_bot_l = 20;
+axle_top_l = 10;
+axle_bot_l = 10;
 axle_top_w = 3;
 axle_bot_w = 10;
 axle_h = 3;
 
 module body() {
 	// base
-	translate([-base_l/2, 0 ])
-		cube([base_l, wall, base_w]);
+	translate([-base_l/2, -base_w/2, 0 ])
+		cube([base_l-tip_l, base_w, wall]);
+
+	// tip
+	translate([base_l/2-tip_l, 0, 0])
+		scale([2*tip_l/base_w, 1, 1])
+		cylinder(r = base_w/2, h = wall);
 
 	// center reinforcement
-	intersection() {
-		translate([-center_l/2, wall, base_w/2])
-		rotate([0, 90, 0])
-		scale([1, center_h/center_w, 1])
-			cylinder(r = center_w, h = center_l, $fn = 4);
-		translate([-infty/2, eps, 0])
-			cube(infty);
+	for (y = [-1, 1]) scale([1, y, 1]) hull() {
+		translate([base_l/2-tip_l, axle_bot_l/2, wall])
+			cube(eps);
+		translate([-base_l/2, axle_bot_l/2, wall])
+			cube(eps);
+		translate([0, axle_bot_l/2-3, wall])
+			cube([eps, 6, eps]);
+		translate([0, axle_bot_l/2, wall])
+			cube([eps, eps, axle_h/2]);
 	}
 
+	// axle holder
 	hull() {
-		translate([-axle_bot_w/2, wall, base_w/2-axle_bot_l/2])
-			cube([axle_bot_w, eps, axle_bot_l]);
-		translate([-axle_top_w/2, wall+axle_h, base_w/2-axle_top_l/2])
-			cube([axle_top_w, eps, axle_top_l]);
-	}
-
-	// tip
-	intersection() {
-		// the main tube
-		difference() {
-			translate([base_l/2, tip_r, 0]) 
-				cylinder(r = tip_r, h = base_w, $fn = 128);
-			translate([base_l/2, tip_r, -eps]) 
-				cylinder(r = tip_r - wall, h = base_w+2*eps, $fn = 128);
-		}
-		// the appropriate quarter of the tube only
-		translate([base_l/2, -eps, -eps])
-			cube([tip_r + eps, tip_r + eps, base_w+2*eps]);
-		// make the tip round
-		translate([tip_rv_off, -eps, base_w/2-eps])
-			rotate([-90, 0, 0])
-			cylinder(r = tip_rv, h = base_w + 2*eps);
+		translate([axle_x-axle_bot_w/2, -axle_bot_l/2, wall])
+			cube([axle_bot_w, axle_bot_l, eps]);
+		translate([axle_x-axle_top_w/2, -axle_top_l/2, wall+axle_h])
+			cube([axle_top_w, axle_top_l, eps]);
 	}
-
 }
 
 module ski() {
 	difference() {
 		body();
 		// slot
-		translate([-axle_slot/2, wall+axle_h/2, 0])
-			cube([axle_slot, infty, base_w]);
+		translate([axle_x-axle_slot/2, -base_w/2, wall+axle_h/2])
+			cube([axle_slot, base_w, infty]);
 		// hole
-		translate([0, wall+axle_h/2, 0])
+		translate([axle_x, -base_w/2, wall+axle_h/2])
+			rotate([-90, 0, 0])
 			cylinder(r = axle_hole/2, h = base_w, $fn = 6);
 	}
 }
 
-// ski();
-
-// left and right part
-for (i = [-1, 1]) scale([1, i, 1])
-	translate([0, 8, 0])
-		ski();
+ski();